C-81
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Specifications
Part Data
- Housing or Shaft Shaft
- Axial or Radial Radial
- Shaft Diameter Ds 0.812 inches
- Ds mm 20.600 mm
- Groove Diameter Dg 0.729 - 0.735 - inches
- Groove Width W 0.046 - 0.049 - inches
- Groove Depth D 0.040 inches
- Free Diameter Df 0.714 - 0.728 - inches
- Thickness T *** 0.040 - 0.044 - inches
- Maximum Section S Max 0.092 - 0.102 - inches
- Outside Diameter G 0.915 inches
- Clearance Dia. Installed In Groove L2 0.940 inches
- Weight Per 1000 Pcs. 1.700 lbs.
- Edge Margin Y Min. 0.080 inches
- Hardness ST 66.000 - 71.000 - HR30N
- Hardness SS 63.000 - 69.500 - HR30N
- Hardness BC 54.000 - 62.000 - HR30N
- Interchange Waldes Truarc 5103 81
- Interchange IRR 2000 81
- Interchange Anderton N1800 0081
- Interchange Mil Or Aero MS16632C 81
- Interchange Din
Performance Data
- Thrust Ld. (lbs.) Ring Safety Factor Of 4 Pr 2,040 lbs.
- Thrust Load Groove Safety Factor Of 2 Pg 1,150 lbs.
- R.P.M. Limits Standard Material RPM 16,000.000
Tool Data
- Standard Applicator (Flat) A-420
- 45 Applicator A-424
- 90 Applicator A-429
- Offset Applicator A-427
- Heavy Duty Dispenser D-170
- Spring Rail Dispenser SD-170
Product SKUs
Product SKUs listed may not include all available options. If you don't see what you're looking for, or need help selecting the right part, please contact us.
| Item SKU | Style | Material | Finish | Quote |
|---|---|---|---|---|
| C-81SS | External/Shaft crescent | PH 15-7 Stainless Steel | None/Self Finish | Quote |
| C-81SS MPS | External/Shaft crescent MS16632-4081 | PH 15-7 Stainless Steel | Military Passivation | Quote |
| C-81ST PD | External/Shaft crescent | Carbon Steel SAE 1070-1090 | Phosphate & Oil | Quote |
| C-81ST ZD | External/Shaft crescent | Carbon Steel SAE 1070-1090 | Zinc Dichromate | Quote |
| C-81ST ZF | External/Shaft crescent | Carbon Steel SAE 1070-1090 | Zinc Flash | Quote |
| C-81ST MCD | External/Shaft crescent MS16632-1081 | Carbon Steel SAE 1070-1090 | Military CAD Plating | Quote |
| C-81ST MPD | External/Shaft crescent MS16632-3081 | Carbon Steel SAE 1070-1090 | Military Phosphate and Oil | Quote |
| C-81ST MZD | External/Shaft crescent MS16632-2081 | Carbon Steel SAE 1070-1090 | Military Zinc Dichromate | Quote |
Materials and Finishes
Materials
- Carbon Steel (SAE 1060-1090)
- Stainless Steel (PH15-7 Mo, PH17-7)
- Beryllium Copper
- Special Material Grades
Finishes
***For plated rings, add .002" (.05 mm) to the listed maximum thickness.
- PA - Phosphate, Carbon Steel
- PD - Phosphate and Oil, Carbon Steel
- PAL - Phosphate with Sealer, Carbon Steel
- HPD - Heavy Phosphate and Oil, Carbon Steel
- ZF - Zinc Bright, Carbon Steel
- ZDL - Zinc Dichromate with Sealer, Carbon Steel
- HZDL - Heavy Zinc Dichromate with Sealer, Carbon Steel
- Z3X - Trivalent Chromate over Zinc, Carbon Steel
- ZFF - Zinc Flash, Carbon Steel
- CF - Copper Flash, Carbon Steel
- ZD - Zinc Dichromate, Carbon Steel
Documentation
Description
C retaining rings are radially assembled external circlips and are part of Rotor Clip’s radial retaining ring line. Named for their characteristic "C" shape, these crescent-style rings feature a shallow radial width. This design is effective for low clearance applications where radial installation is preferred.
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